Article ID Journal Published Year Pages File Type
152928 Chemical Engineering Journal 2008 5 Pages PDF
Abstract

Palladium (Pd) and palladium–platinum (Pd–Pt) colloidal nanoclusters catalysts have been prepared and immobilized on a magnetic support. Modification effects of magnetic support Fe3O4 and bimetallic structure on the catalysts have been studied by catalytic experiments and computational simulation. The Fe3O4 support benefits to catalytic selectivity of the nanoclusters in the selective hydrogenation of o-chloronitrobenzene to o-chloroaniline. X-ray photoelectron spectroscopy analyses indicate that the interaction between Fe3O4 and Pd atoms modifies catalytic performances of the nanoclusters. Computational simulation gives the atom distribution, in which Pd atoms are enriched on the surface of the Pd–Pt bimetallic cluster, while Pt atoms on the subsurface. It is found that the inner Pt atoms present beneficial modification on catalytic selectivity. In conclusion, the magnetic metal nanocluster catalysts provide good catalytic properties and easy isolation by magnetic field for their reuse.

Related Topics
Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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